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MDEV-19377 Replace Virtual_column_info::field_type to Type_handler

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This commit is contained in:
Alexander Barkov 2019-05-01 08:47:04 +04:00
parent 0cbc930616
commit ea679c88c3
3 changed files with 9 additions and 12 deletions
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2
sql/field.cc
View File

@ -10572,7 +10572,7 @@ bool Column_definition::check(THD *thd)
if (vcol_info)
{
DBUG_ASSERT(vcol_info->expr);
vcol_info->set_field_type(real_field_type());
vcol_info->set_handler(type_handler());
if (check_expression(vcol_info, &field_name, vcol_info->stored_in_db
? VCOL_GENERATED_STORED : VCOL_GENERATED_VIRTUAL))
DBUG_RETURN(TRUE);

17
sql/field.h
View File

@ -524,7 +524,8 @@ static inline const char *vcol_type_name(enum_vcol_info_type type)
- whether the field is used in a partitioning expression
*/
class Virtual_column_info: public Sql_alloc
class Virtual_column_info: public Sql_alloc,
private Type_handler_hybrid_field_type
{
private:
enum_vcol_info_type vcol_type; /* Virtual column expression type */
@ -532,7 +533,6 @@ private:
The following data is only updated by the parser and read
when a Create_field object is created/initialized.
*/
enum_field_types field_type; /* Real field type*/
/* Flag indicating that the field used in a partitioning expression */
bool in_partitioning_expr;
@ -546,8 +546,8 @@ public:
uint flags;
Virtual_column_info()
: vcol_type((enum_vcol_info_type)VCOL_TYPE_NONE),
field_type((enum enum_field_types)MYSQL_TYPE_VIRTUAL),
:Type_handler_hybrid_field_type(&type_handler_null),
vcol_type((enum_vcol_info_type)VCOL_TYPE_NONE),
in_partitioning_expr(FALSE), stored_in_db(FALSE),
utf8(TRUE), expr(NULL), flags(0)
{
@ -568,14 +568,11 @@ public:
DBUG_ASSERT(vcol_type != VCOL_TYPE_NONE);
return vcol_type_name(vcol_type);
}
enum_field_types get_real_type() const
{
return field_type;
}
void set_field_type(enum_field_types fld_type)
void set_handler(const Type_handler *handler)
{
/* Calling this function can only be done once. */
field_type= fld_type;
DBUG_ASSERT(type_handler() == &type_handler_null);
Type_handler_hybrid_field_type::set_handler(handler);
}
bool is_stored() const
{

2
sql/item.h
View File

@ -7130,7 +7130,7 @@ bool fix_escape_item(THD *thd, Item *escape_item, String *tmp_str,
inline bool Virtual_column_info::is_equal(const Virtual_column_info* vcol) const
{
return field_type == vcol->get_real_type()
return type_handler() == vcol->type_handler()
&& stored_in_db == vcol->is_stored()
&& expr->eq(vcol->expr, true);
}